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- The following diagram of a leaf shows what happens in a plant leaf during photosynthesis.(Solved)
The following diagram of a leaf shows what happens in a plant leaf during photosynthesis.
(a) State two ways in which leaves are adapted to absorb light.
(b) Name the gases labeled x and y.
(c) Name the tissues that transports:-
(i) Water into the leaf.
(ii) Sugar to other parts of the plant.
(d) Explain why it is an advantage for the plant to store carbohydrates as starch rather than as sugars.
Date posted: September 16, 2019.
- Study the following diagram showing longitudinal section of a kidney.(Solved)
Study the following diagram showing longitudinal section of a kidney.
Name the parts labeled A and B.
Date posted: September 16, 2019.
- A mixed school can accommodate a maximum of 440 students. The number of girls must be at least 120 while the number of boys must...(Solved)
A mixed school can accommodate a maximum of 440 students. The number of girls must be at least 120 while the number of boys must exceed 150.
Taking x to represent the number of boys and y the number of girls, write down all the inequalities representing the information above.
Date posted: September 16, 2019.
- The points with coordinates (5,5) and (-3, -1) are the ends of a diameter of a circle centre A. Determine;
a)The coordinates of A.
b)The equation of...(Solved)
The points with coordinates (5,5) and (-3, -1) are the ends of a diameter of a circle centre A. Determine;
a)The coordinates of A.
b)The equation of a circle, expressing it inform of x2 + y2 + ax + by + c = 0 where a, b and c are constants
Date posted: September 16, 2019.
- Name the cavity formed by the scapula that form a joint with the humerous.(Solved)
Name the cavity formed by the scapula that form a joint with the humerous.
Date posted: September 16, 2019.
- Using trapezoidal rule of 5 strips determine the area under the curve y=3x2 – 20 between the line x=1 and x=6. (Solved)
Using trapezoidal rule of 5 strips determine the area under the curve y=3x2 – 20 between the line x=1 and x=6.
Date posted: September 16, 2019.
- Name two bones that form the pectoral girdle.(Solved)
Name two bones that form the pectoral girdle.
Date posted: September 16, 2019.
- The apparatus below illustrate breathing in a mammal.(Solved)
The apparatus below illustrate breathing in a mammal.
(a) Describe what happens if the rubber plug is pulled in the direction shown by the arrow.
(b) Give the parts of mammal represented by:-
(i) Capillarity tube.
(ii) Rubber plug.
Date posted: September 16, 2019.
- A farmer bought a tractor at Kshs.210,000 and sold at Kshs.52,500, after using it for five years. Calculate the annual rate of depreciation of the...(Solved)
A farmer bought a tractor at Kshs.210,000 and sold at Kshs.52,500, after using it for five years. Calculate the annual rate of depreciation of the tractor.
Date posted: September 16, 2019.
- Give the name of the following responses.
(i) curvature of plant shoot towards light.
(ii) coiling of a plant shoot round a supporting structure.(Solved)
Give the name of the following responses.
(i) curvature of plant shoot towards light.
(ii) coiling of a plant shoot round a supporting structure.
Date posted: September 16, 2019.
- Two chords PQ and RS of a circle meet a point X outside the circle. If PX = 6cm, QX = 3.5 cm and
XS...(Solved)
Two chords PQ and RS of a circle meet a point X outside the circle. If PX = 6cm, QX = 3.5 cm and
XS = 3 cm, find the length of the chord RS.
Date posted: September 16, 2019.
- The following statement represents a type of gene mutation.(Solved)
The following statement represents a type of gene mutation.
(a) Identify the type of gene mutation illustrated in I and II above.
(b) Name two examples of chromosomal mutation that lead to change in chromosomal structure.
Date posted: September 16, 2019.
- Without using a calculator or mathematical tables simplify; (Solved)
Without using a calculator or mathematical tables simplify;
Date posted: September 16, 2019.
- Explain how dioecism prevent self-pollination(Solved)
Explain how dioecism prevent self-pollination
Date posted: September 16, 2019.
- Explain what happens when two species occupy the same habitat.(Solved)
Explain what happens when two species occupy the same habitat.
Date posted: September 16, 2019.
- Triangle ABC is the image of triangle XYZ when transformed under the matrix . If the area of triangle ABC is 770cm2, find the...(Solved)
Triangle ABC is the image of triangle XYZ when transformed under the matrix . If the area of triangle ABC is 770cm2, find the area of triangle XYZ.
Date posted: September 16, 2019.
- A student observed a row of 16 epidermal cells in a microscopic field that was 8mm in diameter. Calculate the average length of each cell...(Solved)
A student observed a row of 16 epidermal cells in a microscopic field that was 8mm in diameter. Calculate the average length of each cell in micrometers.
Date posted: September 16, 2019.
- A scientific space craft brought some material to earth from the outer space. Explain how one would establish if the material is living or non-living.(Solved)
A scientific space craft brought some material to earth from the outer space. Explain how one would establish if the material is living or non-living.
Date posted: September 16, 2019.
- Study the diagrams set A1, set E1, set M1 and set B carefully and answer the questions below(Solved)
Study the diagrams set A1, set E1, set M1 and set B carefully and answer the questions below
(a) State the conditions under which each set up was grown.
Set A1
Set E1
Set B
(b) (i) Name the phenomenon exhibited by seedlings in set E1
(ii) Give a reason why plants exhibit the phenomenon named in (b) (i) above
(c) (i) Name the response exhibited by the seedlings in set B.
(ii) Explain how the response named in (c) (i) above occurred
(d) (i) State the type of germination exhibited by seedlings in set A1 and set M1.
Set A1
Set M1
(ii) Give a reason for your answer in (d) (i) above
Set A1
Set M1
(iii) State the mode of dispersal in set A above when mature.
(iv) Name the type of fruit formed by M1 on maturity.
Date posted: September 16, 2019.
- The probability that Christine qualifies for a job as a marketing manager depends on whether she passes or fails in mathematics. The probability that she...(Solved)
The probability that Christine qualifies for a job as a marketing manager depends on whether she passes or fails in mathematics. The probability that she fails in mathematics is ⅓. If she passes the probability that she qualifies for the job is ¾. If she fail there is a probability of 1/6 that she qualifies for the job. What is the probability that she qualifies for the job.
Date posted: September 16, 2019.
- Solve the equation(Solved)
Solve the equation
Date posted: September 16, 2019.
- The length and the breadth of a rectangular floor were measured and found to be 4.1m and 2.2m respectively. If a possible error of 0.01m...(Solved)
The length and the breadth of a rectangular floor were measured and found to be 4.1m and 2.2m respectively. If a possible error of 0.01m was made in each measurement. Calculate the percentage error in the area of the floor.
Date posted: September 16, 2019.
- Make y the subject of the formula.(Solved)
Make y the subject of the formula.
Date posted: September 16, 2019.
- Use logarithms, correct to 4 decimal places to evaluate(Solved)
Use logarithms, correct to 4 decimal places to evaluate
Date posted: September 16, 2019.
- Study the kidney diagrams below:(Solved)
Study the kidney diagrams below:
a) i) Name the part labeled A in figure 1
ii) Name the process that takes place in the parts labeled V.
b) State two homeostatic functions of the organ in the diagram above.
c) Explain what will happen to the process of urine formation in absence of ADH.
Date posted: September 16, 2019.
- The diagram below represents three types of neurons found in a mammalian body.(Solved)
The diagram below represents three types of neurons found in a mammalian body.
(a) Name the neurons X, Y and Z
(b) Name the chemical substance responsible for the transmission of an impulse across the gap labelled W.
(c) State two functions of the part labelled M.
(d) In which part of the spinal cord is neurone Y located?
(e) Using arrows indicate on the diagrams the direction followed by nerve impulse leading to a response.
Date posted: September 16, 2019.
- Below is a diagram of a plant a form three student collected while carrying out an ecological study(Solved)
Below is a diagram of a plant a form three student collected while carrying out an ecological study
a) With reasons identify the division into which the students classified the plant.
b) (i) Name the structure that produces spores in this plant.
(ii) State two differences between the plant division above and that of the division spermatophyta.
c) Give two distinguishing features of class Amphibia
Date posted: September 16, 2019.
- The figure below shows cuboids ABCDEFGH. Given that AB=12 cm, BC= 8 cm and BF=4 cm.
(a)State the projection of AG on the plane EFGH.
(b)Determine the...(Solved)
The figure below shows cuboids ABCDEFGH. Given that AB=12 cm, BC= 8 cm and BF=4 cm.
(a)State the projection of AG on the plane EFGH.
(b)Determine the angle between the line AG and the Plane EFGH.
(c)Given that L! M and N are the mid points DC, FG and AB respectively, determine the angle between the planes ADM and NLM.
(d)Find the angle between the skew lines AG and BC.
Date posted: September 16, 2019.
- Below is a diagram of a structure found in Eukaryotic cells. Study it and answer the questions that follow(Solved)
Below is a diagram of a structure found in Eukaryotic cells. Study it and answer the questions that follow
a) Identify the structure
b) State two functions of the structure
c) i) Name one organelle found in animal cells but absent in plant cells
ii) State one function of the organelle you have named in(c) i) above
Date posted: September 16, 2019.
- Two variables A and B are believed to be related by a law of the form A=mnB + 1.1 where m andn are constants. The...(Solved)
Two variables A and B are believed to be related by a law of the form A=mnB + 1.1 where m and n are constants. The table below shows corresponding values of A and B as obtained from an experiment.
By drawing a suitable straight line graph estimate the values of m and n.
Date posted: September 16, 2019.